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C.E.L_Slide_test2/docs/architecture/IMP-31-GATE-AUDIT.md
kyeongmin c864fe0479 feat(#61): IMP-33 AI fallback scaffolding (u1~u11, flag default OFF) 
Frame-aware AI fallback module scaffolded under src/phase_z2_ai_fallback/
with master flag ai_fallback_enabled=False; normal-path AI call count
remains 0. AI output constrained to builder_options_patch /
partial_overrides / slot_mapping_proposal; MDX / frame_id / raw HTML /
raw CSS mutations rejected at schema layer. IMP-46 cache gate (cache.py)
raises AiFallbackCacheGateError unless visual_check_passed AND
user_approved. Step 12 wires AI repair after IMP-30 provisional payload
only; Step 17 stays blocked behind IMP-34 / IMP-35 prerequisites.
AST isolation guard forbids fallback package from importing Phase Q /
Kei / pipeline runtime symbols. Docs IMP-17 / IMP-31 bound to runtime
module surface via 11-row structural test pin (test_docs_sync.py) so
drift fails CI.

Tests: 116 fallback / 161 phase_z2 regression / 526 scoped full sweep
all passing. Existing pre-IMP-33 fixture issue in scripts/test_phase_t_*
remains untouched (out of scope).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-21 12:46:49 +09:00

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# IMP-31 — AI-assisted frame-aware adaptation activation gate audit
**Status**: design-only audit. IMP-31 (#40) = IMP-17 carve-out activation tracking issue. No new design slot. No runtime AI code lands until the 3-condition AND gate clears.
**Source**
- Gitea issue [#40](https://gitea.hmac.kr/Kyeongmin/C.E.L_Slide_test2/issues/40) IMP-31 — AI-assisted frame-aware adaptation (restructure / reject routes).
- Carve-out boundary spec: [`IMP-17-CARVE-OUT.md`](IMP-17-CARVE-OUT.md) (allowed / forbidden / activation gate).
- Backlog row: [`PHASE-Z-IMPLEMENTATION-ISSUE-BACKLOG.md`](PHASE-Z-IMPLEMENTATION-ISSUE-BACKLOG.md):68 (IMP-17 — carve-out, normal path 밖, soft link IMP-04 + IMP-05).
- Stage 1 / Stage 2 exit reports: `.orchestrator/issues/40_stage_problem-review_exit.md` (Stage 1 binding contract).
## Issue-body anchor drift (axis C1)
Issue body cites `src/phase_z2_pipeline.py:452` for IMP-05 L5 `_imp05_route_hint()`. Current anchor surface (commit `1efbf67`):
- `:570` — conceptual comment ("restructure → AI-assisted frame-aware adaptation (deferred to IMP-17 …)").
- `:572` — `_IMP05_ROUTE_HINTS: dict[str, str] = {` declaration.
- `:575` — `"restructure": "ai_adaptation_required"` entry.
- `:580` — `def _imp05_route_hint(label: Optional[str]) -> Optional[str]:`.
- `:664` — `"route_hint": _imp05_route_hint(match.label)` candidate_evidence emission.
Anchor pin: `tests/orchestrator_unit/test_imp17_comment_anchor.py`. Synced in [`IMP-17-CARVE-OUT.md`](IMP-17-CARVE-OUT.md):10 (Stage 3 u1).
## 3-condition AND gate state (this cycle)
| # | Condition | State | Evidence |
|---|---|---|---|
| 1 | User GO — explicit activation request | **NOT CLEAR** | No axis activation directive in #40. Stage 1 root_cause: runtime consumer = 0. |
| 2 | B4 frame_selection evidence integration complete | **NOT CLEAR** (⚠ partial) | [`PHASE-Z-PIPELINE-STATUS-BOARD.md`](PHASE-Z-PIPELINE-STATUS-BOARD.md):48 Step 9 ⚠ partial; :82 "B4 frame_selection 의 V4 evidence 미통합"; :126 (j) ❌ pending. |
| 3 | IMP-04 catalog expansion + IMP-05 V4 fallback live | **AMBIGUOUS** | `templates/phase_z2/catalog/frame_contracts.yaml` = 11 `template_id:` entries vs 32 target. IMP-05 V4 rank-2/3 fallback selector logic live, but catalog coverage gates real semantics. |
**Verdict**: gate **NOT CLEAR**. Runtime AI adaptation remains gated. `src/phase_z2_ai_fallback/` = **scaffolded under IMP-33** (#61, Stage 3 u1~u11); module created, but `settings.ai_fallback_enabled` defaults to `False` (u1) so normal-path AI call count remains 0 (PZ-1). Runtime engagement still requires the 3-condition AND gate above.
## Issue-body axis verdict
| Axis | Issue-body line | Verdict | Binding boundary |
|---|---|---|---|
| A1 | restructure → ai_adaptation_required actual adaptation route | **gate-blocked** | Allowed only inside [`IMP-17-CARVE-OUT.md`](IMP-17-CARVE-OUT.md) Step 12 fallback path; runtime AI consumer not added this cycle. |
| A2 | reject → design_reference_only | **gate-blocked + frontend ownership** | Reject route = design reference only. Frontend zone-level override remains IMP-29 scope ([`PHASE-Z-PIPELINE-OVERVIEW.md`](PHASE-Z-PIPELINE-OVERVIEW.md) Step 12). |
| A3 | AI call provider | **Anthropic API only** | Kei API / `EDITOR_PROMPT` / Kei-API endpoint forbidden (Phase Q Kei persona 영구 단절 — [`IMP-17-CARVE-OUT.md`](IMP-17-CARVE-OUT.md) §"AI 격리 + Kei persona 단절 contract"). |
| A4 | candidate_evidence[].route_hint | **live (deterministic emission)** | Emission anchored at `src/phase_z2_pipeline.py:570/:572/:575/:580/:664`; AI consumer deferred. Anchor pin: `tests/orchestrator_unit/test_imp17_comment_anchor.py`. |
| A5 | MDX content preservation = strict | **locked** | No invent / rewrite / compress / summarize ([`IMP-17-CARVE-OUT.md`](IMP-17-CARVE-OUT.md) §Forbidden; memory `feedback_phase_z_spacing_direction`). |
| A6 | AI prompt = frame-aware placement only, not "rewrite content" | **locked** | Output = content_object → Internal Region / Frame Slot placement proposal at content-object granularity ([`IMP-17-CARVE-OUT.md`](IMP-17-CARVE-OUT.md) §Allowed). HTML / CSS / layout / zone topology / frame selection X. |
| A7 | popup / details / zone-resize routing when content cannot fit | **deferred to Step 17 fallback** | Deterministic actions exhausted (zone_ratio_retry / layout_adjust / frame_reselect / details_popup_escalation / image_fit_candidate / frame_internal_fit_candidate) before AI proposal ([`IMP-17-CARVE-OUT.md`](IMP-17-CARVE-OUT.md) §Allowed Step 16/17). |
| A8 | no `calculate_fit` migration | **locked** | IMP-05 selector uses V4 labels + frame-contract presence + Phase Z capacity precheck only (`src/phase_z2_pipeline.py:587` `lookup_v4_match_with_fallback` declaration; :599 docstring "it does not call calculate_fit"; secondary anchors :3093 / :4871). |
| C1 | Anchor drift `:452` → current | **synced** | Stage 3 u1 — [`IMP-17-CARVE-OUT.md`](IMP-17-CARVE-OUT.md):10. |
| C2 | Backlog + status-board cross-ref | **planned (u3)** | Cross-ref discoverability surfaces only; no verdict duplication. |
## Out of scope (this cycle)
Runtime AI consumer enablement (flag default OFF), `candidate_evidence` schema change, Phase Q file mutation, Kei API reuse, frontend zone override (IMP-29 scope), IMP-30 invariant change, `calculate_fit` migration. Note: `src/phase_z2_ai_fallback/` directory scaffold itself was created under IMP-33 (#61, Stage 3 u1~u11) — see [`IMP-17-CARVE-OUT.md`](IMP-17-CARVE-OUT.md) §"Runtime module surface".
## Future activation path
When the 3-condition AND gate clears (User GO ∧ B4 V4 evidence integrated ∧ catalog 32/32 + IMP-05 V4 fallback live):
- Runtime AI module path = `src/phase_z2_ai_fallback/` (scaffolded under IMP-33; flag default OFF until gate clears).
- Provider = Anthropic API only. Prompt design starts fresh (no Phase Q `EDITOR_PROMPT` import).
- Output granularity = content_object → Internal Region / Frame Slot placement proposal. Frame / layout / zone topology selection remains deterministic.
- Activation tracker = this issue (#40, IMP-31). No new IMP ID issued.
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